Question

the lengths of the side of a triangle (in centimetres) are 3 consecutive integers. the length of the shortest side is 25% of its perimeter. the area of the triangle (in square centimetres) is?​

Answer 1

Answer: answer will be 5

Step-by-step explanation:Using sine law,

n−1

sinα

​

=

n+1

sin2α

​

⇒2cosα=

(n−1)

n+1

​

⇒cosα=

2(n−1)

n+1

​

∴

2n(n+1)

n

2

+(n+1)

2

−(n−1)

2

​

=

2(n−1)

(n+1)

​

 (using cosine law)

⇒

2n+(n+1)

n

2

+4n

​

=

2(n−1)

(n+1)

​

⇒

2(n+1)

n+4

​

=

2(n−1)

n+1

​

⇒(n+1)

2

=(n+4)(n−1)

∴n=5

Answer 2

Step-by-step explanation:

Give a brief account of the sight, the sounds and the activities of all children at the